Indicating system.



E. C. MOLI'NA. INDICATINC SYSTE M. APPLICATION FYILED SEPT-l7, 1913- I Patented June 29-, 1915.

3 SHEETS-SHEET I.

. IIHHEII (r l I E E. C. M'OLINA.

INDICATJNC SYSTEM. APPLICATION FILED SEPT-17,1913.

Patented-J1me 29,1915.

3 SHEETS-SHEET 2.

y ff c. MOLINA.

INDICATINC SYSTEM. APPLICATION FILED SEPT-17,1913- Patnted June 29, 1915.

' 3 SHEETS-SHEET 3.

nuirians ra rss m m eas est EDWARD G. MOLINA, vE EAST ORANGE, NEW JERSEY, ASSIGNOR T-O AMERICAN TELEPHONE AND TELEGRAPH COMPANY, ACORPOR-ATION OF NEW YORK.

' INDICATING- SYSTEM.

Toallwhom it may concern residing at: East Grange, in the county. of

Essexwand' State of. New Jersey, have invented certain Improvements in Indicating Systems, .of which the following is a spoo .fication.1

In telephone: systemsin which i called sub- I station lines are joined to calling lines tionsregistered at the controllersinto different conditions directly-governing selec through both automatic or semiautomatic and :manual central stations or offices, it" iscustomary to. place before each B oper- [gator] at the manual ofiices ail-indicating a'p- 'paratus, which will respondto the conditions produced by the actuation of the subscribers or A operators selection con-f trollers. 'to-display before said B. operators the" numbers of-the wanted lines. Such a system is'described in :British'pa'tent to the Western Electric Company, Ltd, No.18648 of? 1911, When the selectors of. the auto- 'matic or semiautomatic oifices have non decimally arrangedtermlnals, and therefore call for the translation of the decimal con ditions corresponding to the line designation, as is provided for inGerman patent to 'Telephon' Apparat Fabrik' E. Zwietusch & 00., N0.'196696,"published March 23, 1908,

i it is necessary that the operation of the controllers for substation lines into manual offices shall lead to the same effect as isreg :istered upon them." T=hat is, that the depressionof idecimal keys shall cause the dis play-ofa decimal number. It is' possible to accomplishthisby completely eliminating translation" for lines to man'ua-l oflices, setting up ini'co'nnecti'on therewith only decim'al conditions, but this tends to undue com- I plicationi; I simplify the procedure by uni- /for'mly translating the controller-impulses,

and then reveisely translating to the decimal'system such of these as vare to govern the indicators of'manual oifi'ces. -This re-' sult is accomplished by means-of a trans-.

' latin'g indicator whichis provided with the" usual characters for displaying-decimal-line designations, but which has selecting devices differently arranged, usually in accordance with the groups of impulses emen from the translator.

Specification of Letters Patent, Patented 'Applioation filed September 17, 1913.; Serial No. 790,363.

.vention in a much simplified form. 1

right exhibi June 2a, 1915;

.translatingindicator, together with the porv ti'ons of .t'heline equipment of calling and called lines, and a trunk or link circuit-for connecting these. I

The-three. sheets placed sideby side with the figure numbers in -order from left to tion. i

I The letter S" (FigsA-land 2 designates anoperators controlling apparatus, including the combined register-translator switch: S?

and the transmitting switches or stoppers S, S and S "Thismay be united by '.means of a'key K with a-trunk L,-L having atan operators. osition at a semiautomatic oflice O a plug for connection with the answering jack J" of'a calling snb-, 75

soribers'line, and terminating atan operators position at -a manual oilice O" in. a

plugl? for co'clperation with the multiple jack J of the called subscribers line. Joined to the trunk and'situated before the operator to whom is assigned the plug P is r the systein in the proper-reladicating mechanism D" and hundreds digit indicating mechanism D WVith the controller and lndicat'or'are associated various relays, signals and other auxiliary devices,

the purpose, of which is either 'fullydisclosedin the patents previously referred toor will be made clear in the'd'escrip'tion of operation' of the system. Other-"trunks or. link circuits, it may be assumed, terminate,

in the usual trains o f selectors through which the subscribers of the semiautomatic office may be reached, and with these trunks i the controller maybe associated through other keys K individual thereto. Except as giving a 'reason for initial translation, this vautomatic switching has nothing'to do with my invention, and is not illustrated. If

further information regarding such composite systems is desired, reference-maybe tioned.

' had to the l3ritish:patent hereinbefore men'- The selecting switches employed in the system ofvBritish Patent No. 18 648 of 1911 80 an indicator I), having thousands digit inare described indetail in British patent to M cBerty, No.16867 of 1911, they having sets '01 brushes traveling over successive levels of fixed terminals, any one of which brush sets may be tripped to actively engage the corresponding terminals. It "may ee-considered that the present invention is to be used in connection with an automatic system adapted to select any one of ten thoug sand lines, and that the selectorshave five offive hundred for each primary group,correspondingto one-quarter of the'termin'als in each of the five first selector levels, and

1 giving twenty-five trunk terminals for serving each secondary group through a final se-.

- Iector; and five tertiary non-decimal groups representing, respectively, the hundreds in the fivehundreds of the secondary groups I and corresponding to the five brush fsets belongin to the final selectors.

machine's no attention need be paid, .as into thistranslation does not-enter; To make the gr oupggrelation obvious,- the' numbers of Q Which-the primary and 'secon'dary groups are composed are given below, and alsothe 10i course, simJlar to the first.

II tertia1;v groups comprehended within-the -first primary group. The tertiary groups .for the other four primary groups are, of

. Primary groups f secoridary'crqups.

rirs1...'.;.. ...0000101000 seco dnuufin; 20530103000 f Third n'. 40000050100, I

t we 0 00007000 I II 7500107000 Firm"; 8000000000 80001.0 8499 '55: 8500to8999- .'.,9000to9 499 1, 11:011.. 0500000000 v I Tertwrg groups in secondary groups of first primary 0 I -group., Y I I First. seondl. 'Thirdg I Fourth Fi e/1i.

1st. 0000 0000 .0100 0100 0200 0200 0300 0300 040 0400- 2nd.-0500/0599 0000/0000. 0700 0100 08 0 0800 000 0000 3rd. 1000 1000 1100 1100 1200 1200 1000 1300 1400/1400 To. the tens. 30 and umtsselection in the hundreds terminals. making the different levels of thefinal.

tion "of the associated 1 A-description WlllIlOWi be given 'ofthe in- X I I m. e

v The hundreds I dial or "bee 00 1ike/ the dieatingapparatus for'reversely tran'slat- I ing th nomdecimalgroups of selecting impulses into decimal indications' A' dial or Wheel w of the thousands indicatiiig mecha- .nism D and a hundreds dial or Wheel 10?: of the indicating mechanism D are rotatably mounted adjacent to one another, and have arranged-near their peripheries all the digits from-0 t0'9. F or the thousand's'dial these are duplicated they being in five sets of four each, these sets being, res ectively, O 0,1,*1;" 2, 2, 3,3; 4, 4, 5, 5; 6,6,2,

Upon reference to the group tables, it will be seen that this gives, divided into the fiveprimary groups, the thousands digits of all the'secondary groups in the'order in. which they appear for the numbersOOOO to 9999. Upon rotation of-the 0101a any one of I these thousands digits may be brought into registration with a. sight opening 10 in a casing (notillustrated) in; which the dialsare mo'unted. V I I For the primary and secondary number groups there are corresponding non-decimal groups of translatmgor selecting members, here shown as -'cons1st1ng of live primary a ratchet teeth 11, one for each primary group, and five "groups of four'secondary ratchet teeth-12, one tooth foreach of the :four thou'sands'digits constituting the secondary groups. "In additionto the twenty secondary teeth in the five groups there '95 are intermediate teeth of-the same size Which serve to return the dial to its normalposh .tion,,but1vvhich have nothing todo withthe operation of translation: Cooperating with 1 i the teeth 11 is a pawl -13 pivoted to alever'lco 14-, which lever carries the armature 15 'of anelectrom'agnet d. The lever is held nor mally retracted by a spring-1th The throW 1 of this lever, underfthe influence of the magnet d issuch thatrfor each energization of the latter the first ot one of the primary 1 groups of numerals is br ught 'Within one vfshort step oi the sight opening 10. Similarly, the-teeth 12 are engaged by a pawl 17 I "oscillated by an electromagnet-ei and the 3 digits of the particular primary group hav ing been brought into proximityqVith' the -jsight opening by the magn'etd, the magnet 0 d;.is energized-theco'rrect number of-times,

from one tofonntostep opposite" the sight-1:15

opening-the'thousands' digituwhichbegins j the desired secondary group withini'the. previo'usly chosen primary group; Shown 'as situated near the sight opening10 i'sta dou ble contact devioedi', Wh'ich'is operated by a series' of :projectionsVld on the dial w I when either-the secondZ -or. fourth numeral "of asecon'dary group'isalinedvvith' the opening-'10,,but which is left in its nor-mal; position. when vthe o'r'third digitslatp fi pear. fi'lhe purpose of device will ,5 explained in'connection wi I thedesc'jrjipaI- han's thousands 0101, has "t e-an, argiei r; 10 0? 40 1 when the other set for the second and fourth secondary groups arein sight, and the contact device is operated, the impulses are uniformly, but more widelyspac'ed. Each appear" at the opening 10 and the contact ranged about-its periphery to be brought oppositea sight opening 10. From the ta- Me of tertiary groups composing the first primary and first four secondary groups, it will be notedthat the hundreds digits in the first and third secondary groups are-successively O, 1 2, 3 and 4 and in the second and fourth secondary groups are 5', 6, 7,

' I 8 and'9. Through the other primary groups the relation of the hundreds digits in the tertiary groups is precisely the same. Therefore to translate from the non-decimal groups of five, corresponding to the received indicator controlling impulses, to the decimal hundreds ofthe line designation, it is necessary to determinein which secondary group the hundreds digit occurs "and then select one of five digits therein, purpose the. numbers of dial w ,are in two For this sets, those from 0 to 4 being closelyplaced at equal distances from one another, while those. from 5 to 9 follow the'second set, also set of numerals has -a 'corresp onding nondecimal set' of five tertiary translating or selecting members, these being as in. the thousands dial in the form of ratchet teeth. There are five small teeth 19 for the digits from 0 to 4, engaged bya spring retracted pawl 20 pivoted upon a lever 21- actuated by an electromagnet (F. For the second set, 5 to 9-,.there are five larger teeth 22 engaged by a long-throw pawl 23 under the influence pf an electromagnetd The circuit connections of the magnets d and (Z are such-that when the thousands digits for'the first or third secondary group in any primary group device at is normal,- the magnet d is trav ersed by the indicator setting impulses, but

transferred to th emagnet d In describing theope'ration of the indi- I cating system, 'let it be assumed that the subscriber whose line ends at the jack J of the semi automatic otlice 0 Wishes to call 'a subscriber who is served by the manual ofiice O and the number of whose line is 1799. From the group tablesit will be seen that this number falls within the first pri-' mary translated group, the fourth secondary group thereof and the third tertiary group of said fourthsecondary group. The operator at O',-upon observing the lighting of the calling subscribers line lamp answers by I plugging into the jack J with the plug P of'an idle trunk and, receives the call inthe usual manner. She then operates the key K to associate her controller S with thetrunk-in use, and thereafter depresses the proper digit keys, of which only the second thousands key IQ and the eiglithundreds key. K need be here considered. The actuated digit keys place ground on the second thousands register contacts 8 of the regis ter-translator and on the eighth multiplied hundreds register contact 8".

The key' K closes a contact 25 energizing relay R applies current impulses from the interrupter I and battery B to the long-step or thousands motor magnet M of the register-translator. The brushes of the registertran'slator are now advanced until the brush .9 reaches the groundedterminals 8". This energizes the transfer relay R current flowing from battery 13 through conduct-or 30, .brush s terminal .9 and key K.-

Relay R at its back contact breaks the stepping circuit through magnet M and transfersit at the front contact to the shortstep or hundreds motor magnet M through conductor 3l'and the back contact of cut' 'ofi" relay R The brushes are again advanced until brush 5 arrives at the eighth multipl'ed hundreds terminal 3 in the second set, corresponding to the second'thousand, when the cut off relay R attracts its armatures, because of a circuit through its winding 'from batter B conductor32, front 'contact of relay R? brush 8, terminal 8 and the hundreds key K to ground. At its back-contact relay R? severs the circuit of the hundreds stepping magnet, and by means of its front contact applies battery B throu h conductor 33 to the retaining magnet of primary group transmitting switch-S The system is now ready for sending translated or non-decimal setting impulses to' the indicator.

Vhen the retaining magnet H isenergiaed, it operates the holding pawl of the primary transmitting switch and closes a path from battery 13 and interrupter I through primary motor magnet M back contact of transfer relay R controller lead Z, contact 34 of key -K, trunk conductor L, back contact .of indicator cut off relay R,

conductor 35, back, contact of indicatorj transfer relay the thousands ground. The primary transmitting switch R and motor magnet (Z of indicator. mechanism to 5 and the thousandsindica-tor dial. 20 now rotate in synchronism; the latter being moved in long steps by the pawl. 13, so that the first of each of the sets of symbols into the openinglO. When-one step has been scribed upon the dial is brought adjacent so conductor 29- and back contact of transfer I .10 codperation of translator terminals andthe terminals of the transmitting switches, as is fullydescribed in the previously mentioned German patent. The transfer relay R envergized from battery 13 through the circuit 15 completed by brushes's and s breaks the leadl'. and closing its front contact connects battery B through conductor 36 to the retaining. magnet H; of the secondary group transmitting switch Sf Magnet H applies its holdingipawl and closes the follow:

ing circuit: From the pole-{of battery B through internnpter I secondary group transmitting switch motor magnet M front contact of retaining magnet H back contact of secondary group transfer relay R, controller lead I, contact '37 of key K, trunk Conductor L back contact of indicator cut-off relay R, conductor 38,- one Winding of transfer relay R and onewind 80 mg of motor magnet 03 of the thousands indicator mechanism -D to ground. Motor magnets M and d operate synchronously to stepthe dial 20 through short intervals untiljthe' transmitting brush a? touches the fourth terminal, which '1s grounded at the fourth translator terminal s and brush a. "As in the case of the switch S transfer relay'R isoperated .to break the stepping I circuit which includes the motor magnet d 40 of the thousands indicator dial. Said dial ae'omes to rest with the fourth figure, Z, o f-- the first set opposite'the opening 10 1 When lfielayR was traversed by the firstimpulse v of the secondary indicatorsetting groupdt 5 locked up from battery B through ofl" n0r= mal contact 39 of'dial 'w"andlamp L. The latter is illuminated andnotifies the-operas Itor that the designation of a line wanted is being displayed upon the indicator. The 0 other armature of-relayRshift'sconductor 35 from motor magnet d of dial to tothejgonductor 40 leading to thecontact device 4 alined withthe sight opening lo aprojection 1'8is in engagement withthe contact dc;

- yice, closing its contact 41' and opening contact l2. Contact l2 joins conductor 40 with I theshort step motor magnet d whieh'sel'ects theset of digits-fromO. to 4. Contact 9. 3L1, which is now effective, gives connection with the long step magnet i controlling the displayof the digits 5 to 9. The-indi;

cator is now ready ton'eceive the tertiarygroup of nnpulsesto set up the hundreds 16 digit.

system.

and considering th-atas far a's the novel porfrom battery 'B As the fourth numeral of the set 1s passes from battery B and interrupter I In addition to stopping the rotation of the switch S and dial w, relay R? by making its 1front contact supplies current from 1 battery BY over conductor 44 to the retaining magnetYI-F"? of the tertiary group transmittingiswitch S By this retaining magnet the holding pawl isput into operation, and battery B and interrupter IK are united to the motor magnet M of the'transmitting switchS, and through lead Z, key contact 34, trunk conductor L, back contact-of cut off relay R, conductor,35, front contact of transfer, relay'B, conductor .40, 1 contact 41 and conductor 45 with' the .wind- 1 ing of the long step motor magnetd of the '80 dial. to? Synchronous operation of the switch ,S anddial w results until three impulses-have passed. "The transmitter brush s then arrives at the groundfu-rnished by the tertiary group translator terminal 8 and its brush 8 f, when the cut ofl' relay R is energized'and thercircuit of the motor magnet dibrbken when-the numeral 7 appears at the sight opening 10. The decimal th ou'sands and hundreds digits 1 and 7 ea of the called subscribers-line, have now been displayedbefore the manual operator at the w oflice; O by means of initiatingdecimal con- I ditions at the-semiautomatic operators eontrolle'rat ofiiee O, translated into non-decimal grouping in accordance fwith autonlatic practice -and re-tran'slated to the decimal: v

. Disregard' the =an'S and units digits,

tion' of this systemis concerned the indiestor has performed its function, relay B? through its fronixcontact provides o'l-lrrent- 1 for;-la'1np 'L, which informs the operator at oflice O that the num ber hasbeen displayed at ofiice 0. ;She'

thereupon 'relea'se'sthe trunk key K which opens its contacts 25,, 34 and 37,and thereby releases the controller, the displaced 'el'e ments ofjwhic'h return to normal; Contacts 1 4 6 and- 17 of this key complete the contlmuty of the trunk conductors.v The operatoratoffice' Ohaving noted theindica tiori'displayed, and after theusual test,'in-- serts the trunk plug P? in the indicated jack 1 The connection is, now complete and ready for ringing the called subscriber.

ing of'indi'cator cut off relay R. The latter at its back contacts frees the indicator from g i the trunk. At its front contact current through conductor 48, then to ground by parallel, Saidydialsare. thereby stepped 01 1 3 The association of the plug 1 with the jack J closed, by wayfof theslee've ofthe ack and corresponding contact of'theplu, circuit from battery 13 through the win until contactsi) and 0 openin the normal Q position of the dials, which thereupon come *torest. At this time the ofi normal contact 3 39 1s also broken, unlocking relay R which v extinguishes the lamp Iclaimzf 1. Indicating" apparatuscompri'sing means for displaying characters arranged in ac-- cordance with one system of grouping, and

means actuated by impulses belonging to a- 1 different system of grouping for operating said displaying means. I

2. Indicating apparatuscomprisingmeans for displayingxa line designation in characters arranged in accordance with one systein of. grouping, I and electro-mechanical means actuated by current impulses belong? ing to a different systemoffgrouping 'for operating said displaying means. M v

In a telephone-indicator, means for disi la in a line desi nation in characters ar .ranged in accordancewith one system of grouping, means for actuating the displaymg means and responsive to .impuls'esbe: longmgto adifierent system of grouplng, and translating means operatlvelyassoclating the actuating means and the indicating means. I

4. Indicating apparatus comprising means fordisplayingnumerals belonging to de ci'-' ma-l groups, and means for actuating the displaying means including selecting members arranged in non-decimal groups.

5. The combination with'decimal indicat-v ing mean's, of electrbresponsive actuating means including non-decimal groups of dial inscribed with numerals and provided actuating members.

6.: The combination with decimalindicatling means, ofa rotatable'device having non:

decimal groups of selecting members and controlling the setting of the indicating means, and-electromagnetic devices for setting the rotatable devices 7 A telephone indicator comprising a with groupsof teeth arranged in accordance with one system of grouping, a pawl coepe erating with said teeth, and impulse driven means for actuating the pawl in accordance j with impulses belonging to a diflerent sys tem. v

8. An indicator comprising-a plurality of indicating means, means for actuating the -mea'ns controlled by the. operation of one ofthe indicating means for determining which aflect another indicating means, one of the indicating means having plural actuatlng means, and

of the actuating means shall indicating means.

9.: A'plurality of indicating means, electromechanisms for setting each indicatingmeans, there being a plurality of setting means for one of the indicating means, and means controlled in the setting of one of the indicating means .for determining by which of the electromechanisms another of the-indicating means shall be energized.

10. The combination with plural indiCat ing means, of means for actuating said indicating means including a pluralityofeleca tromagnets for one of theindicating means, and a contact device associated with'one of said indicating means 'for controlling the electromagnets of another ofsaid indicating means. 7

11. The combination with a number wheels,

12. In a telephone system, selection controller, means for translating conditions initiated at the controller to different condi- -tions, means for reverselyj translating the changed conditions to the initial conditions, and indicating means under the influence of the reverse translating means;

plurality of of means for rotating the number wheels including a plurality of electromagnets -associated with one of said wheels,' a contactdevice controlled by one of the wheel's,andci-rcuit connections-where "by the operation of said contact device de- "termines'the energization of one of said electromagnets,

13.jIn a t lephone'system; a selectibncontroller, means for translating conditions ini-' tiated at the controller to different condi tions, and an indicating apparatus includ ing other translating means governed by the lnitialtranslating means and indicating Ume'ans under the HIflUBIICG' of said other translating means.

lt The combination with means for transmitting: currentimpulses in predetermin-ed groups,-o f ,an indicator under the influence of said impulses and comprising translating means responsive to the transmitted-impulses, and character displaying means. controlled by the translating means, the characters belonging to groups different 3 from "those of the transmitted impulses.

15. The combination with means for transmitting current impulses in predeterminedgroups, of an indicator under the 'influence'of said-impulses and comprising selecting' means having elements arranged'in groups corresponding to the transmitted impulses, andcharacter displaying means controlled by the selecting means, the characters belonging -to groups di-fi'er'ent from those of the transmitted impulses.

' 16. The combination with meansfor" its 

